Semiconductor Shift Register for Burst Length Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current semiconductor devices face challenges in efficiently managing burst operations across different burst lengths, particularly in generating and synchronizing control signals for varying data bit lengths, which affects data input/output operations.
Innovation Solution
The semiconductor device incorporates a shift register and control signal generation circuits to generate shifted pulses and control signals based on burst length modes, including a synthesis start pulse generation circuit, continuation start pulse generation circuit, and control signal generation circuit, which synthesize signals to manage burst operations effectively for BL8 and BL16 modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different control signals are designed for each burst length mode (BL8, BL16), then the device can accurately manage each mode, but the device complexity increases and requires design changes for each mode
Solution Approach 1:
The shift register is designed to generate a unified set of shifted pulses that can be used across multiple burst length modes (BL8, BL16, and future modes). The control signal generation circuit selectively uses appropriate shifted pulses based on the active burst length mode, allowing one circuit to serve multiple functions without requiring separate control signal generation paths for each mode.
Solution Approach 2:
The control signal generation circuit dynamically selects which shifted pulses to use based on the active burst length mode. The circuit adapts its behavior by enabling or disabling specific pulse generation paths according to the mode signal, allowing flexible adaptation to different burst lengths without structural changes.
2Adaptability or versatility
If the semiconductor device supports multiple burst length modes with separate control circuits, then it can handle varying data bit lengths, but the integration density decreases and power consumption increases
Solution Approach 1:
A single shift register and control signal generation circuit is designed to handle multiple burst length modes (BL8, BL16) by selectively generating appropriate control signals based on the active mode. This unified approach eliminates the need for separate control circuits for each burst length, thereby reducing overall power consumption while maintaining adaptability across different modes.
Solution Approach 2:
The control signal generation circuit selectively activates or deactivates specific shifted pulse generation paths based on the active burst length mode. When a particular mode is active, only the necessary shifted pulses are generated, effectively discarding unnecessary pulse generation activity and thereby reducing power consumption while maintaining full versatility.
3Manufacturing precision
If separate control signals are generated for each burst operation mode, then precise control is achieved, but the synchronization between control signals becomes complex
Solution Approach 1:
Multiple control signals for different burst length modes are merged into a unified control signal generation architecture. The shift register generates a base set of shifted pulses that are common to all modes, and the control signal generation circuit combines these with mode-specific selections to produce precisely synchronized control signals for the active burst length mode, eliminating the need for separate synchronization circuits.
4Device complexity
If the device uses a unified control signal generation approach for all burst lengths, then integration density improves, but the ability to accurately manage different burst lengths may be compromised
Solution Approach 1:
The control signal generation is segmented into two functional parts: a common shift register that generates base shifted pulses for all burst length modes, and a mode-specific selection circuit that enables or disables specific shifted pulses based on the active burst length mode. This segmentation allows accurate management of different burst lengths while maintaining a unified, integrated control architecture.
Data Source
AI summary
A semiconductor device includes a shift register and a control signal generation circuit. The shift register generates shifted pulses, wherein a number of the shifted pulses is controlled according to a mode of a burst length. The control signal generation circuit generates a control signal for setting a burst operation period according to a period during which the shifted pulses are created. The burst operation period is a period during which a burst operation is performed.